Donegal manager Rory Gallagher believes that this week's Division One clashes are the most important so far.
Gallagher feels that the table will take greater shape after this Sunday as counties will know if they are facing a relegation battle or for a place in the knockout stages.
The Ulster side entertain an impressive Cork outfit that have won both their opening matches and Gallagher told the Donegal Democrat that his charges will have to be at their best to get a result here.
"If we win, we will be looking up, but if we lose we could be looking at a relegation battle. But, it's the same across the board," said Gallagher.
"Apart from Eoin McHugh who is only a few weeks away, we have a fully fit squad. The onus is on us to perform. We have a busy period now with five games in six weeks."
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